A800R Optional ARB/Sway Bar Stiffener Kit (2-Piece) - Heavy Duty Suspension Upgrade for Off-Road Vehicles - Perfect for Jeep Wrangler, Toyota 4Runner & Land Cruiser Off-Roading Adventures

AT143 ARB Stiffener x 2New optional parts for A800RThe AT143 ARB Stiffener increases stiffness of the anti-roll bar up to one step.+1 step stiffness increasings means that 1.0 mm bar acts like 1.1 mm bar1.1 mm bar acts like 1.2 mm bar1.2 mm bar acts like 1.3 mm bar1.3 mm bar acts like 1.4 mm bar.1/2 and 1/4 steps of increasing are possible to set.